Ok, for the longest time I thought my idle was high cause it was at 1k rpm... at least that's what the damn tach said. So when I went to get the idle checked out, they measured 750... the guy who I bought the car from installed NR Auto white face gauges and apparently fucked up the calibration of the tach while he was at it. So now that I I know my idle is actually 750 and not 1k like the tach says... how do I recalibrate it?

 

you've gotta take apart the gauge cluster to get to the gauges/needles. the needle has a certain range of movement so it stops at the ends of its travel. for example, it won't move past about 9.5k in the clockwise direction and -1.5k in the counter clockwise position w/ the stop needle taken out. you need to pull out the stop need carefully and turn the needle counterclockwise and gently force it another -250rpm. it should work. that's the way i recalibrated my tach when i put in my gauges.

 

thanks a lot for the reply... i wasn't quite sure if i had to do some sort of electronic adjustment or not but i guess i can just move it back manually like you said.